Answer
See below
Work Step by Step
Let's say airport A is one of the ellipse's foci, and airport B is the other. We know that if those two points are fixed and the distance between them is constant, the outcome will be an ellipse.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 9 Quadratic Relations and Conic Sections - 9.4 Graph and Write Equations of Ellipses - 9.4 Exercises - Problem Solving - Page 639: 52a
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